Your query returned 2 results.

• On the Geometric Stiffness Matrix in Corotational Space Frame Elements,
  T. Sokol
  Paper 5.1 from CCP: 43, ISBN 0-948749-45-8 (1996)
  
• The Equilibrium Path Determination in Nonlinear Analysis of Structures,
  T. Sokol and M. Witkowski
  Paper 2.3 from CCP: 24, ISBN 0-948749-26-1 (1994)